TWM608698U - Manufacturing of double-layer fabric capable of preventing moisture penetration - Google Patents

Abstract

The invention relates to a double-layer fabric for preventing moisture penetration. The double-layer fabric includes a two-sided layer structure and a cross-linked structure. The two-face layer structure is woven from a base yarn and a heat-fusible yarn. The two-face layer structure may be respectively formed by the heat-fusible yarn and the base yarn, or each of the face layer structure includes the base yarn and the heat-fusible yarn. The melting point of the base yarn is higher than that of the heat-fusible yarn, and one of the two-sided layer structures is subjected to hot pressure to make the heat-fusible yarn to be heat-melted to form a water-blocking layer that prevents water penetration. In addition, the cross-linked structure makes the two-sided layer structure cross-linked, and the interval between the two-sided layer structure is formed by a hanging yarn knitting or a turn-over knitting to form the cross-linked structure to have a pile of yarn thickness. At least the following conditions are met: during the hot pressing time, the temperature rise of one of the two-sided layer tissues that is not heated is not higher than the melting point of the thermally fusible yarn.

Description

Manufacture a double-layer fabric that prevents moisture penetration

The new model relates to a double-layer fabric for preventing moisture penetration, in particular to a double-layer fabric for preventing moisture penetration by heat-melting one of the surface layers to form a water-blocking layer.

According to investigation, there are at least two types of waterproof fabrics. One is products made of GORE-TEX film. This type of product is coated with GORE-TEX film on the surface of the fabric to achieve water blocking effect. However, GORE-TEX membranes tend to lose their waterproof effect after long-term use, and the materials used in GORE-TEX membranes are special, which makes waterproof fabrics made of GORE-TEX membranes expensive.

In this regard, the industry has developed waterproof adhesives or waterproof membranes made of plastic materials. Although the cost of this type of waterproof adhesive or waterproof membrane is lower than that of GORE-TEX membranes, GORE-TEX membranes can generally be seen in the market. After the fabric is coated with waterproof glue or waterproof film, the fabric will harden as the waterproof glue or waterproof film cures, so that consumers cannot get a good, comfortable and soft feeling after wearing the waterproof fabric.

The main purpose of the present invention is to solve the problem of time limitation and high cost of conventional GORE-TEX film.

Another purpose of the present invention is to solve the problem that the waterproof mechanism adopted by the waterproof fabric cannot provide softness and comfort.

In order to achieve the above-mentioned purpose, the present invention provides a double-layer fabric for preventing moisture penetration, which includes: The two-sided layer structure can be woven from a basic yarn or a thermally fusible yarn. The two-sided layer structure is one of the following implementation type I and implementation type II: Implementation type I, each of the surface layer structure includes the base yarn and the heat-fusible yarn; Implementation type II, one of the two-sided layer structure is formed by the base yarn, and the other of the two-sided layer structure is the heat-fusible yarn; Wherein, the melting point of the base yarn is higher than that of the heat-fusible yarn, and one of the two-sided layer structures is heated and pressurized to heat the heat-fusible yarn to form a water barrier that prevents water penetration Layer; and A cross-linked structure to cross-link the two-sided layer structure, and the interval between the two-sided layer structure is formed by a hanging yarn knitting or a turning needle knitting to form the cross-linked structure to have a pile of yarn thickness, the pile thickness of at least The following conditions are met: during the hot pressing time, the temperature rise of one of the two-sided layer structures that is not heated and pressed is not higher than the melting point of the heat-fusible yarn.

In one embodiment, the cross-linked structure is formed by the yarn used for weaving the two-sided layer structure or another yarn additionally fed.

In an embodiment, the another yarn of the aforementioned additional yarn feeding is implemented in one of the following yarn type I, yarn type II, and yarn type III: Yarn type I, the other yarn of the aforementioned additional yarn feeding is the basic yarn; Yarn type II, the other yarn of the aforementioned additional yarn feeding is the thermally fusible yarn; Yarn type III, the other yarn of the aforementioned additional yarn is composed of the base yarn and the thermally fusible yarn.

In one embodiment, the thermally fusible yarn is made of polypropylene (PP) or thermoplastic polyurethane (TPU).

According to the aforementioned new content, compared with the conventional technology, the present invention has the following characteristics: the present invention causes the heat-fusible yarn to be heat-melted to form the water barrier by subjecting one of the two-sided layer structures to hot pressing At the same time, through the thickness of the cross-linked structure during hot pressing, the temperature rise of the unheated two-sided layer structure that has not been heat-pressed during the hot-pressing process is not higher than the heat-meltable The melting point of the yarn allows the double-layer fabric to maintain the softness of the fabric and at the same time provide a waterproof effect.

The detailed description and technical content of the new model are described as follows in conjunction with the diagrams:

Please refer to Figures 1 to 8. The present invention provides a method 10 for manufacturing a double-layer fabric that prevents moisture penetration. The method 10 includes steps: Step 11: Use the current yarn to knit the two-face layer structure 21. The aforementioned yarn is selected from a base yarn 211 and a thermally fusible yarn 212. The melting point of the base yarn 211 is higher than that of the thermally fusible yarn 212. After knitting is completed The two-sided layer structure 21 is one of the following implementation pattern I and implementation pattern II: Implementation type I, each of the surface layer structure 21 includes the base yarn 211 and the thermally fusible yarn 212; Implementation type II, one of the two-sided layer structure 21 is formed by the base yarn 211, and the other of the two-sided layer structure 21 is formed by the thermally fusible yarn 212; Step 2: 12: Use a tuck knit or transfer knit to continuously cross-link the two-sided layer structure 21 to form a cross-linked structure 24, so that the two-sided layer structure 21 is reserved When knitting, the interval produces a pile of yarn thickness 241, so that the cross-linked structure 24 can extend the path of heat conduction; Step 3: 13: Complete an intermediate product, which is a double-layer fabric 20; and Step 4: 14: Apply heating and pressure to one side of the intermediate product, so that the heat-fusible yarn 212 of one of the surface layer tissues 21 after being heated and pressed will heat-melt, and form a moisture barrier The penetration water blocking layer 25, wherein, when the cross-linked structure 24 is heated and pressed during the hot pressing process, the pile thickness 241 makes the temperature rise of one of the two-sided layer structure 21 that is not heated and pressed does not increase It is higher than the melting point of the thermally fusible yarn 212.

Specifically, the knitting related steps of the method 10 of the present invention are all knitting completed by using a flat knitting machine. The flat knitting machine includes a front bed (FB) and a rear needle bed. (Back bed, FB for short) is realized, and the specific structures of the front needle bed and the back needle bed have been conventionally used technologies in this field, and will not be repeated here. In addition, the present invention will describe the two-sided layer structure 21 in detail later, and therefore, the two-sided layer structure 21 will be described in the implementation mode I and the implementation mode II below.

Continuing, taking the knitting of the two-sided layer structure 21 as the implementation type I, in step 11, the two-sided layer structure 21 is knitted with the current yarn by the flat knitting machine, and the aforementioned yarn includes a base Yarn 211 and a thermally fusible yarn 212, the base yarn 211 can actually be an ordinary cotton yarn, and the melting point of the thermally fusible yarn 212 is lower than the base yarn 211, the thermally fusible yarn 212 can be It is made of hot-melt material, so that the hot-meltable yarn 212 will be hot-melted when heated. In one embodiment, the thermally fusible yarn 212 is made of polypropylene (PP) or thermoplastic polyurethane (TPU). Then, in the step two 12, the flat knitting machine continuously crosslinks the two-sided layer structure 21 by the hanging yarn knitting or the turn-over knitting to form the crosslinked structure 24. It is worth noting that the cross-linked tissue 24 described herein actually only causes the two-sided layer tissue 21 to be cross-linked, and does not have the function of supporting the two-sided layer tissue 21, that is, the cross-linked tissue 24 and The support yarn organization described by those with ordinary knowledge in this field is different. Furthermore, the cross-linked structure 24 depicted in FIG. 4 herein is only for illustration, and the cross-linked structure 24 can actually be formed by stacking and staggering a plurality of yarns, thereby enabling the two-sided layer structure 21 to be tightly cross-linked. In addition, because the yarn hanging knitting and the needle transfer knitting of the flat knitting machine can be programmed differently according to the operator's programming of the front needle bed and the rear needle bed, the knitting strokes of the yarn hanging knitting and the needle transfer knitting are different. Because of the difference, this article uses examples to illustrate in the latter part of the specification, and will not be described in detail here. Further, in the process of cross-linking the two-sided layer structure 21, the flat knitting machine makes the space reserved between the two-sided layer structure 21 generate the pile thickness 241, so that the cross-linked structure 24 has to extend the thermal conductivity path. After that, the process proceeds to step three 13, the flat knitting machine completes knitting and produces the intermediate product, which is a semi-finished product of the new type, that is, the double-layer fabric 20 that has not been heated and pressurized. Entering the step four: 14, using a hot pressing device that can provide a heat source to heat and press one side of the double-layer fabric 20, wherein the hot-pressing device can apply heat to one side of the double-layer fabric 20 at the same time. The heating and pressing are performed on one side at the same time, or the double-layer fabric 20 is heated and pressed separately, and the temperature of the heating and pressing can be set to 110°C to 190°C. After one surface of the double-layer fabric 20 is heated and pressurized, the thermally fusible yarn 212 to which the surface layer structure 21 belongs is thermally melted and forms the water blocking layer 25, which prevents water from passing therethrough One surface layer tissue 21 penetrates to the other surface layer tissue 21. At the same time, the surface layer tissue 21 after being heated and pressurized further transfers heat energy toward the cross-linked tissue 24, so that the cross-linked tissue 24 is adjacent to one of the portions of the surface layer tissue 21 after being heated and pressurized. Heat fusion, and one of the two-sided layer structure 21 that is not heated and pressurized provides a sufficient length of heat conduction path through the pile thickness 241, so that the temperature rise generated by the surface layer structure 21 is not higher than the The melting point of the fusible yarn 212 does not generate heat, thereby maintaining the softness of the fabric.

Furthermore, please refer to Fig. 2 and Fig. 7 and Fig. 8 for the implementation type II after the knitting of the two-sided layer structure 21 is completed. In order to facilitate the reader to distinguish the implementation type I from now on, the implementation methods and steps described below are marked with different component numbers. In step 51, the flat knitting machine knits the two-sided layer structure 21 with the base yarn 211 and the heat fusible yarn 212 respectively. That is to say, after the knitting of the two-sided layer structure 21 is completed, one of the two-sided layer structure 21 is the base yarn 211 (as shown by reference number 214), and the other of the two-sided layer structure 21 is The thermally fusible yarn 212 (as indicated by reference numeral 215). Wherein, the base yarn 211 can actually be an ordinary cotton yarn, and the melting point of the heat-fusible yarn 212 is lower than that of the base yarn 211, and the heat-fusible yarn 212 can be made of a hot-melt material, so that The thermally fusible yarn 212 heats up when heated. In one embodiment, the thermally fusible yarn 212 is made of polypropylene (PP) or thermoplastic polyurethane (TPU). Then in step two 52, the flat knitting machine crosslinks the two-sided layer structure 21, and continuously cross-links the two-sided layer structure 21 through the hanging yarn knitting and the turn-over knitting to form the cross-linked structure 24. Further, in the process of cross-linking the two-sided layer structure 21, the flat knitting machine makes the space reserved between the two-sided layer structure 21 generate the pile thickness 241, so that the cross-linked structure 24 has to extend the thermal conductivity path.

Then, it proceeds to step 353, the flat knitting machine completes knitting and produces the intermediate product, which is the semi-finished product of the new type, that is, the double-layer fabric 20 that has not been heated and pressed. In step 454, the heat-pressing device that can provide a heat source is used to heat and press the heat-fusible yarn 212 (such as reference number 215) in the two-sided layer structure 21, wherein the heat-pressing device can At the same time, the two-sided layer structure 21 is formed with the heat-fusible yarn 212 (such as reference number 215) to simultaneously heat and press, or, the two-sided layer structure 21 is formed with the heat-fusible yarn 212 at the same time. The shaper (such as 215) is separately heated and pressurized. In one embodiment, the heating temperature applied by the hot pressing device is 110°C to 190°C. After the double-layer fabric 20 is heated and pressurized, the heat-fusible yarn 212 (such as reference number 215) formed in the two-sided layer structure 21 is melted, and the water blocking layer 25 is formed, and the water blocking layer 25 It prevents water from penetrating from one of the surface layer tissues 21 to the other surface layer tissue 21. At the same time, the heat fusible yarn 212 formed in the two-sided layer structure 21 (such as reference number 215) further transfers heat energy toward the cross-linked structure 24, so that the cross-linked structure 24 is adjacent to the two-sided layer structure 21 with the The part of the thermally fusible yarn 212 (such as the reference number 215) also produces thermal fusion, and the two-sided layer structure 21 that is formed by the base yarn 211 (such as the reference number 214) provides sufficient length by the pile thickness 241 The heat conduction path makes the temperature rise of the base yarn 211 (such as 214) in the two-sided layer structure 21 not higher than the melting point of the heat-fusible yarn 212, so that no heat is generated, thereby maintaining Fabric softness.

In addition, the present invention makes the double-layer fabric 20 not use the conventional mechanism to achieve waterproof effect, but makes one of the two-sided layer structures 21 of the double-layer fabric 20 heat-melt to produce the water-blocking layer 25, and at the same time The cross-linked structure 24 is allowed to block the heat energy of one of the surface layer structures 21 subjected to heat pressing from being transferred to the other of the two surface layer structures 21, thereby directly forming the water blocking layer 25 on the double-layer fabric 20 In order to prevent moisture penetration, the other side of the double-layer fabric 20 is not heated so as to maintain the softness of the fabric.

In conclusion, in an embodiment, this article uses FIGS. 5 and 6 as examples to illustrate the programming of the hanging yarn knitting. Taking Fig. 5 as an example, after a yarn feeding mechanism of the flat knitting machine feeds the aforementioned yarn on the front needle bed, the flat knitting machine performs yarn hanging on the front needle bed at positions one stitch apart from each other, so that The part of the aforementioned yarn located on the front needle bed can be hung on the rear needle bed. Taking Fig. 6 again, after the flat knitting machine knits the two-sided layer structure 21, the yarn feeding mechanism feeds the aforementioned yarns. The flat knitting machine makes the aforementioned yarns on the front needle bed hang on the rear needle bed at positions separated by a plurality of needles, and then hangs the aforementioned yarns on the needle bed at the same number of stitches apart. Yarn on the front needle bed. Wherein, in the present invention, the yarn-hanging knitting depicted in FIGS. 5 and 6 is only an example for illustration, and it is not used to limit the programming of the yarn-hanging knitting.

Furthermore, please refer to Figure 3, Figure 7 to Figure 9, in the step two 12, the cross-linked structure 24 is woven from the yarn used to form the two-sided layer structure 21 or another additional feed The yarn 240 is formed. Specifically, referring to FIG. 4, the cross-linked structure 24 can be used when the flat knitting machine knits the two-sided layer structure 21, using the base yarn 211 and the heat-fusible yarn contained in each surface layer structure 21 Woven by yarn 212. Alternatively, referring to FIGS. 7 and 8, the cross-linked structure 24 may be knitted by the base yarn 211 or the heat-fusible yarn 212 when the flat knitting machine knits the two-sided layer structure 21. In addition, please refer to FIG. 9, the cross-linked structure 24 can also be woven by the flat knitting machine by means of additional yarn feeding, and the other yarn 240 used by the flat knitting machine during the additional yarn feeding can be The base yarn 211, the thermally fusible yarn 212, or a mixture of the basic yarn 211 and the thermally fusible yarn 212 are formed.

On the other hand, please refer to FIGS. 3 and 4 again. In one embodiment, the step four to 14 further includes a sub-step 141 of applying negative pressure to one of the two-sided tissue 21 that has not been heated or pressurized. . Specifically, after the double-layer fabric 20 forms the cross-linked structure 24, when the hot-pressing device heats and presses one of the two-sided layer structures 21, the hot-pressing device can provide the two-sided layer at the same time. The other one of the tissue 21 is negatively pressured, so that a temperature difference is formed between the two surface layer tissues 21, thereby preventing heat energy from being transferred to one of the surface layer tissues 21 that have not been heated through the cross-linked tissue 24, thereby avoiding One of the surface layer structures 21 that has not been subjected to hot pressing may be hot melted, and at the same time, the cross-linked structure 24 may be hot melted. In addition, in another embodiment, when the present invention hot-presses one of the two-sided layer structure 21 in the step four: 14, the hot pressing device can use the high-frequency heat treatment method to induce current in the two-sided layer structure 21 One of the predetermined hot presses is locally heated and pressurized. Through the high-frequency heat treatment in this embodiment, only the partial structure of the two-sided layer structure 21 can be subjected to hot pressing, and the condition of the two-sided layer structure 21 receiving the hot pressing can be more specifically controlled.

It is worth noting that, in the foregoing figures and drawings, only the method 10 is used to illustrate the specific implementation aspects of the present invention, and the specific implementation aspects of the method 50 are the same as those of the method 10, so the detailed description is omitted in the figures and texts.

On the other hand, please refer to FIG. 4 and FIG. 7 to FIG. 9. The present invention also provides a double-layer fabric 20 that prevents moisture penetration, and the double-layer fabric 20 can be manufactured by the method 10 or the method 50, respectively. Firstly, the double-layer fabric 20 made by the method 10 will be described. The double-layer fabric 20 is composed of the two-sided layer structure 21 and the cross-linked structure 24. Specifically, the two-sided layer structure 21 respectively contains a plurality of yarn loops 213, each of the yarn loops 213 is formed by the base yarn 211 and the heat-fusible yarn 212, one of the two-sided layer structure 21 is heated With pressure, the heat-fusible yarn 212 to which the surface layer structure 21 belongs after being heated and pressurized to form the water blocking layer 25 for preventing the penetration of water. On the other hand, the cross-linked structure 24 cross-links the two-sided layer structure 21, and the cross-linked structure 24 is formed by the hanging yarn knitting or the turning over knitting of the space between the two-sided layer structure 21, Therefore, the cross-linked structure 24 is provided with the pile thickness 241. The pile thickness 241 is such that when one side of the double-layer fabric 20 is heated and pressurized, the temperature generated by one of the two-sided fabric 21 that is not heated and pressurized during the hot pressing time is not higher than the The melting point of the heat-fusible yarn 212 makes the double-layer fabric 20 only form the water-blocking layer 25 on one of the two-sided layer structure 21, and the other of the two-sided layer structure 21 is not thermally melted. The softness of the double-layer fabric 20 can be maintained.

On the other hand, when the double-layer fabric 20 is woven by the method 50, the double-layer fabric 20 also includes the two-sided layer structure 21 and the cross-linked structure 24. The two-sided layer structure 21 is respectively formed by the base yarn 211 and the thermally fusible yarn 212, wherein the melting point of the basic yarn 211 is higher than the melting point of the thermally fusible yarn 212, and the two-sided layer structure 21 uses the The thermally fusible yarn 212 (for example, reference number 215) forms the water-blocking layer 25 to prevent the water from penetrating by being heated and pressed. On the other hand, the cross-linked structure 24 cross-links the two-sided layer structure 21, and the cross-linked structure 24 is formed by the hanging yarn knitting or the turning over knitting of the space between the two-sided layer structure 21, Therefore, the cross-linked structure 24 is provided with the pile thickness 241. The pile thickness 241 is such that when the two-sided layer structure 21 is formed by the heat-fusible yarn 212 (such as reference number 215), the two-sided layer structure 21 is formed by the base yarn 211 (such as reference number 214). ) The temperature rise generated during the hot pressing time is not higher than the melting point of the fusible yarn 212, so that the double-layer fabric 20 forms the water-blocking layer 25 only on one of the two-sided layer structure 21, and the The other of the two-sided layer structure 21 is not heat-melted, so that the softness of the double-layer fabric 20 can be maintained. In conclusion, the double-layer fabric 20 of the present invention does not use the conventional mechanism to achieve the purpose of waterproofing, but can provide the wearer with a comfortable feeling.

In one embodiment, the cross-linked structure 24 may be formed by the yarn used for weaving the two-sided layer structure 21 or the additional yarn 240 fed in. Furthermore, when the cross-linked structure 24 is woven with the yarn used in the aforementioned two-sided layer structure 21, it means that the cross-linked structure 24 may be the aforementioned base yarn 211 mixed with the heat-fusible yarn 212. The cross-linked structure can also be woven from the heat-fusible yarn 212 to which the heat-fusible yarn 212 (such as reference number 215) belongs in the two-sided layer structure 21, or it is The two-sided layer structure 21 is woven with the basic yarn 211 to which the basic yarn 211 (for example, reference number 214) belongs. In addition, when the cross-linked structure 24 is formed by the additional yarn 240 fed in, the other yarn 240 used in the cross-linked structure 24 may be the base yarn 211, the thermally fusible yarn 212, or It is formed by mixing the base yarn 211 and the thermally fusible yarn 212.

To sum up, it is only a preferred embodiment of the present model. When the scope of implementation of the present model cannot be limited by this, that is, all equal changes and modifications made in accordance with the scope of the patent application of the present model should still belong to the present model. The scope of patent coverage.

10: method 11: step one 12: Step two 13: Step Three 14: Step Four 141: substep 20: Double fabric 21: Surface organization 211: Basic Yarn 212: Fuseable yarn 213: Yarn Ring 214: Those who form the base yarn in the two-sided layer structure 215: Formed by thermally fusible yarn in the two-sided layer structure 24: Cross-linked organization 240: Another yarn 241: pile thickness 25: Water blocking layer 50: method 51: Step One 52: Step Two 53: Step Three 54: Step Four 541: substep

Figure 1 is a schematic diagram of the steps in the implementation mode I of the present invention (1). Figure 2 is a schematic diagram of the steps in the implementation mode II of the present invention. Figure 3 is a schematic diagram (two) of the steps in the implementation mode I of the present invention. Figure 4 is a schematic diagram (1) of the double-layer fabric of the implementation type I of the present invention. Figure 5, a schematic diagram of the new type of hanging yarn knitting (1). Figure 6 is a schematic diagram of the new type of hanging yarn knitting (2). Fig. 7 is a schematic diagram of the double-layer fabric of the implementation type II of the present invention (1). Fig. 8 is a schematic diagram of the double-layer fabric of the implementation type II of the present invention (2). Fig. 9 is a schematic diagram of the double-layer fabric of the implementation type I of the present invention (2).

20: Double fabric

21: Surface organization

211: Basic Yarn

212: Fuseable yarn

213: Yarn Ring

24: Cross-linked organization

241: pile thickness

25: Water blocking layer

Claims (4)

A double-layer fabric that prevents moisture penetration, including: The two-sided layer structure can be woven from a basic yarn or a thermally fusible yarn. The two-sided layer structure is one of the following implementation type I and implementation type II: Implementation type I, each of the surface layer structure includes the base yarn and the heat-fusible yarn; Implementation type II, one of the two-sided layer structure is formed by the base yarn, and the other of the two-sided layer structure is the heat-fusible yarn; Wherein, the melting point of the base yarn is higher than that of the heat-fusible yarn, and one of the two-sided layer structures is heated and pressurized to heat the heat-fusible yarn to form a water barrier that prevents water penetration Layer; and A cross-linked structure to cross-link the two-sided layer structure, and the interval between the two-sided layer structure is formed by a hanging yarn knitting or a turning needle knitting to form the cross-linked structure to have a pile of yarn thickness, the pile thickness of at least The following conditions are met: during the hot pressing time, the temperature rise of one of the two-sided layer tissues that has not been heated and pressed is not higher than the melting point of the thermally fusible yarn. The double-layer fabric for preventing moisture penetration according to claim 1, wherein the cross-linked structure is formed by the yarn used for weaving the two-sided layer structure or another yarn additionally fed. The double-layer fabric for preventing moisture penetration according to claim 2, wherein the another yarn of the aforementioned additional yarn feeding is one of the following yarn type I, yarn type II, and yarn type III Implement: Yarn type I, the other yarn of the aforementioned additional yarn feeding is the basic yarn; Yarn type II, the other yarn of the aforementioned additional yarn feeding is the thermally fusible yarn; Yarn type III, the other yarn of the aforementioned additional yarn is composed of the base yarn and the thermally fusible yarn. The double-layer fabric for preventing moisture penetration according to any one of claims 1 to 3, wherein the thermally fusible yarn is made of a polypropylene (PP) or a thermoplastic polyurethane (TPU).

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